Eugen Polanski (Polish pronunciation: ; born Bogusław Eugeniusz Polański on 17 March 1986) is a Polish professional footballer who plays mainly as a defensive midfielder.
Born in Sosnowiec, Poland, Polanski moved to Germany as an infant, joining Borussia Mönchengladbach's youth ranks at the age of eight. In 2004–05, on 12 February 2005, he made his debut both in the first team and the Bundesliga, in a 0–2 away loss against SV Werder Bremen that was his sole appearance of the season.
Polanski scored his first goal as a professional in a 1–1 home draw against Bayer 04 Leverkusen on 19 November 2005, and went on to be relatively played in the following years. In 2007–08, however, as the campaign ended in promotion, he only featured in nine second division games.
After his contract at Borussia expired in June 2008, Polanski agreed a move to La Liga with Getafe CF. During his first and only season, as the Madrid side finished just one place above the relegation zone, he was first-choice, often partnering Javier Casquero in central midfield.
On 12 June 2009, Polanski was loaned out to 1. FSV Mainz 05 on a season-long spell. However, the following month, the deal was extended for another year, with the clubs reaching an agreement for a permanent switch in early November 2010.
On 25 January 2013, Polanski joined fellow top division team TSG 1899 Hoffenheim, penning a deal until June 2015.
Polanski appeared for Germany in various youth levels, often as captain. He was a key member of under-21s at the 2006 UEFA European Championship, scoring a magnificent long-range goal in the fixture against Serbia and Montenegro; his form during the tournament made AS Monaco FC enquire about his services, but Mönchengladbach promptly rejected the offer.
In May 2011, Polanski confirmed his intent to play for Poland. On 26 July, he was called up by manager Franciszek Smuda for a friendly with Georgia, making his debut in the game which took place on 10 August.
Polanski was selected as part of the 23-man squad that competed in the finals played on home soil and Ukraine. He played in three games during the tournament, in an eventual group stage exit.